Which of the following compound is the strongest base?

In the above first order reaction the initial concentration of $\mathrm{N}_{2} \mathrm{O}_{5}$ is $2.40 \times 10^{-2}\, \mathrm{~mol} \,\mathrm{~L}^{-1}$ at $318 \,K.$ The concentration of $\mathrm{N}_{2} \mathrm{O}_{5}$ after $1\, hour$ was $1.60 \times 10^{-2}\, \mathrm{~mol} \,\mathrm{~L}^{-1}$, The rate constant of the reaction at $318\, \mathrm{~K}$ is $.....\,\times 10^{-3} \mathrm{~min}^{-1}$. (Nearest integer)

[Given: $\log 3=0.477, \log 5=0.699$ ]

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The correct structure of tribromooctaoxide is

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In which of the following ${S_{{N^1}}}$ reaction racemic mixture will form as major product ?

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Copper reduces $NO _{3}^{-}$ into $NO$ and $NO _{2}$ depending uponthe concentration of $HNO _{3}$ insolution. (Assuming fixed $\left[ Cu ^{2+}\right]$ and $\left. P _{ NO }= P _{ NO _{2}}\right),$ the $HNO _{3}$ concentration at which the thermodynamic tendency for reduction of $NO _{3}^{-}$ into $NO$ and $NO _{2}$ by copper is same is $10^{ x }\, M$. The value of $2 x$ is ...... .

$\left[\right.$ Given $, E_{C u^{2+} / C u}^{o}=0.34\, V , E _{ NO _{3}^{-} / NO_2 }^{\circ}=0.96\, V$ (Rounded-off to the nearest integer) $E _{ NO _{3} / NO _{2}}^{\circ}=0.79 \,V$ and at $298 \,K$ $\left.\frac{ RT }{ F }(2.303)=0.059\right]$

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Amines — Chemistry STD 12 Science — Question

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